Neewer Aluminum Alloy 52mm Lens Filter Adapter Ring for GoPro HERO 4 Session with a Hexagonal Screwdriver and a Keeper Leash -- Black ONLY compatible with GoPro Hero 4 Session Camera. Allows you to attach 52mm filters and lens. Made of lightweight and durable aluminum alloy. Comes with a hexagonal screwdriver and a keeper leash, easy for installation and transport. Note: 1.GoPro Hero 4 Session Camera, housing, filter and lens Not Included. 2.Compatible with GoPro Hero 4 Session Camera ONLY.